Stories about mySQL seem to generate quite a bit of interest here, so here's one (last?) pointer to yet another way of getting mySQL running. This should be the easiest way of all - a Mac-friendly, double-clickable installer package. It's been tested by several people, and they've had good things to say about it.

CAUTION: If you have already installed mySQL (fully or partially), you should probably remove it prior to installing this version. On the MacNN forums, a poster claims that the package didn't work well with his previously installed version.